No.

Item

Unit

880

881

882

883

884

1

Density

g/cm³

>1.80

>1.80

>1.90

>2.00

>2.00

2

Water absorption

%

<0.5

<0.5

<0.15

<0.05

<0.05

3

Tensile strength

Mpa

>500

>600

≥1200

≥1200

≥1200

4

Bending strength

Mpa

>400

>500

≥1100

≥1100

≥1100

5

Bending strength
145±2℃

Mpa

　

　

　

≥230

≥230

6

Surface withstand voltage 1min normal

Kv

10

12

　

　

　

7

Boiling experiment in 100h salt water

Kv/1min

　

　

12

12

12

8

Leakage current

mA

　

　

<1

<1

<0.5

9

Stain test

min

　

　

≥15

≥15

≥15

10

Stress corrosion test

h

1mol/1HNO₃,316Mpa stress

≥96

11

Thunder shock withstand voltage
(100KV)

Time

　

　

　

≥5

12

Volume resistivity

Ω·ｍ

140^。96h

≥10¹⁰

13

DC breakdown voltage

KV

　

　

　

≥50

≥50